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Friday, April 1 • 08:30 - 08:55
S19-01 Towards a national infrastructure for semi-automatic mapping of cultural heritage in Norway

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Towards a national infrastructure for semi-automatic mapping of cultural heritage in Norway

Martin Kermit, Øivind Due Trier

Recently, the Norwegian government decided to finance a new national digital terrain model (DTM) based on airborne laser scanning (ALS) at 2 pulses per m2 in forested areas and automatic image matching above the tree line. This may open up for semi-automatic mapping of cultural heritage in any region of interest in Norway, provided that the cultural heritage being sought manifests itself in the DTM. However, this calls for the development of a national infrastructure combining the storage and retrieval of ALS data with automatic detection methods. 

A pilot web portal for this infrastructure has been developed for use by archaeologists in some county administrations in Norway. The user specifies an area of interest, and selects which types of cultural heritage to look for. Since the new national DTM is not implemented yet, the user will need to upload an ALS data set. As the processing of large ALS data sets may be time consuming, the user will be notified when the task has been completed by an e-mail, which also contains a link where the processing result in the form of vector files may be downloaded. 

Currently, semi-automatic detection of the following types of cultural heritage is supported: grave mound, pitfall trap, charcoal burning pit, and charcoal kiln. We plan to add semi-automatic detection of hollow ways and stone fences.

The output is one set of files for each type of cultural heritage. Within each type of cultural heritage, the detection results are grouped into six levels of confidence. The detections should be viewed and evaluated successively by an experienced archaeologist; starting with the highest confidence level. 

The pilot portal is already a useful tool for archaeologists in the participating pilot counties in Norway, and demonstrates the need for a national infrastructure for processing of ALS data.

Friday April 1, 2016 08:30 - 08:55 CEST
Domus Media, Aulaen

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